From 0ce62b1a2fee1ff6b13b1d0557e5573ce829d709 Mon Sep 17 00:00:00 2001
From: Guo Wenxue <guowenxue@gmail.com>
Date: Fri, 05 Jul 2019 02:45:43 +0800
Subject: [PATCH] raspberrypi/modules/c source code for infrared, relay #pin set for Monitor RPi, and add tsl2561 lux sensor code
---
modules/c/makefile | 1
modules/c/tsl2561.c | 130 +++++++++++++++++++++++++++++++++++++++++++
modules/c/infrared.c | 4
modules/c/sht20.c | 3
modules/c/tsl2561.h | 38 ++++++++++++
modules/c/relay.h | 4
6 files changed, 174 insertions(+), 6 deletions(-)
diff --git a/modules/c/infrared.c b/modules/c/infrared.c
index 6475fc3..3ebbb99 100644
--- a/modules/c/infrared.c
+++ b/modules/c/infrared.c
@@ -15,8 +15,8 @@
#include <unistd.h>
#include <wiringPi.h>
-/* I/O Pin connected to PIN#16, BCM code pin number is 23 and wPi pin number is 4 */
-#define INFRARED_PIN 4
+/*Monitor RPi I/O Pin connected to PIN#38, and wPi pin number is 28 */
+#define INFRARED_PIN 28
int main (int argc, char **argv)
{
diff --git a/modules/c/makefile b/modules/c/makefile
index c4d4d6e..9eaad45 100644
--- a/modules/c/makefile
+++ b/modules/c/makefile
@@ -20,6 +20,7 @@
LDFLAGS+=-lwiringPi
LDFLAGS+=-lpthread
+LDFLAGS+=-lm
VPATH= .
SRCS = $(wildcard ${VPATH}/*.c)
diff --git a/modules/c/relay.h b/modules/c/relay.h
index af47779..c2d238c 100644
--- a/modules/c/relay.h
+++ b/modules/c/relay.h
@@ -19,8 +19,8 @@
#define OFF 0
#endif
-/* I/O Pin connected to PIN#18, BCM code pin number is 24 and wPi pin number is 5 */
-#define RELAY_PIN 5
+/* Moniter RPi I/O Pin connected to PIN#40, and wPi pin number is 29 */
+#define RELAY_PIN 29
void relay_init(void);
void turn_relay(int cmd);
diff --git a/modules/c/sht20.c b/modules/c/sht20.c
index 5395bbe..04a7219 100644
--- a/modules/c/sht20.c
+++ b/modules/c/sht20.c
@@ -17,8 +17,7 @@
#include <sys/ioctl.h>
#include <linux/types.h>
#include <sys/stat.h>
-#include <linux/i2c.h>
-#include <linux/i2c-dev.h>
+#include <linux/i2c-dev.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
diff --git a/modules/c/tsl2561.c b/modules/c/tsl2561.c
new file mode 100644
index 0000000..e88cd4b
--- /dev/null
+++ b/modules/c/tsl2561.c
@@ -0,0 +1,130 @@
+/*********************************************************************************
+ * Copyright: (C) 2019 LingYun IoT System Studio
+ * All rights reserved.
+ *
+ * Filename: tsl2561.c
+ * Description: This file is the Lux sensor TSL2561 API functions on RaspberryPi,
+ * which connected to I2C-1
+ *
+ * Version: 1.0.0(04/07/19)
+ * Author: Guo Wenxue <guowenxue@gmail.com>
+ * ChangeLog: 1, Release initial version on "04/07/19 17:39:38"
+ *
+ ********************************************************************************/
+
+#include <wiringPi.h>
+#include <wiringPiI2C.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <math.h>
+#include <errno.h>
+
+#include "tsl2561.h"
+
+
+int tsl_fd = -1;
+
+static const int regs_addr[REG_COUNT]={DATA0LOW, DATA0HIGH, DATA1LOW, DATA1HIGH};
+
+int tsl2561_init(void)
+{
+ if(tsl_fd > 0)
+ return 0;
+
+ tsl_fd = wiringPiI2CSetup(TSL2561_I2C_ADDR);
+ if(tsl_fd < 0)
+ {
+ printf("TSL2561 I2C setup failure: %s\n", strerror(errno));
+ }
+ else
+ {
+ printf("TSL2561 initialise ok, tsl_fd=%d\n", tsl_fd);
+ }
+
+
+ return tsl_fd;
+}
+
+
+int tsl2561_get_lux(void)
+{
+ int i;
+ int reg_data[REG_COUNT];
+
+ int chn0_data = 0;
+ int chn1_data = 0;
+
+ double div = 0.0;
+ double lux = 0.0;
+
+ /* Power up TSL2561 */
+ wiringPiI2CWrite(tsl_fd, CONTROL_REG);
+ wiringPiI2CWrite(tsl_fd, POWER_UP);
+
+ sleep(1);
+
+ /* Read register Channel0 and channel1 data from register */
+ for(i=0; i<REG_COUNT; i++)
+ {
+ wiringPiI2CWrite(tsl_fd, regs_addr[i]);
+ reg_data[i] = wiringPiI2CRead(tsl_fd);
+ //printf("write and read register: 0x%0x->%d\n", regs_addr[i], reg_data[i]);
+ }
+
+ chn0_data = reg_data[1]*256 + reg_data[0]; /* Channel0 = DATA0HIGH<<8 + DATA0LOW */
+ chn1_data = reg_data[3]*256 + reg_data[2]; /* channel1 = DATA1HIGH<<8 + DATA1LOW */
+
+ if( chn0_data<=0 || chn1_data<0 )
+ {
+ //printf("TSL2561 get date chn0_data[%d] chn1_data[%d]\n", chn0_data, chn1_data);
+ lux = 0.0;
+ goto OUT;
+ }
+
+ div = (double)chn1_data / (double)chn0_data;
+
+ if( div>0 && div<=0.5 )
+ lux = 0.304*chn0_data-0.062*chn0_data*pow(div,1.4);
+
+ else if( div>0.5 && div<=0.61 )
+ lux = 0.0224*chn0_data-0.031*chn1_data;
+
+ else if( div>0.61 && div<=0.8 )
+ lux = 0.0128*chn0_data-0.0153*chn1_data;
+
+ else if( div>0.8 && div<=1.3 )
+ lux = 0.00146*chn0_data-0.00112*chn1_data;
+
+ else if( div>1.3 )
+ lux = 0.0;
+
+OUT:
+ printf("TSLl2561 get lux: %.3f\n", lux);
+
+ wiringPiI2CWrite(tsl_fd, CONTROL_REG);
+ wiringPiI2CWrite(tsl_fd, POWER_DOWN);
+}
+
+
+int main(int argc, char **argv)
+{
+ int interval = 1;
+
+ if( argc >= 2 )
+ {
+ interval = atoi(argv[1]);
+ }
+
+ tsl2561_init();
+
+ while(1)
+ {
+ tsl2561_get_lux();
+ sleep(interval);
+ }
+
+}
+
+
diff --git a/modules/c/tsl2561.h b/modules/c/tsl2561.h
new file mode 100644
index 0000000..ea85025
--- /dev/null
+++ b/modules/c/tsl2561.h
@@ -0,0 +1,38 @@
+/********************************************************************************
+ * Copyright: (C) 2019 LingYun IoT System Studio
+ * All rights reserved.
+ *
+ * Filename: tsl2561.h
+ * Description: This head file is the Lux sensor TSL2561 API functions on RaspberryPi
+ *
+ * Version: 1.0.0(04/07/19)
+ * Author: Guo Wenxue <guowenxue@gmail.com>
+ * ChangeLog: 1, Release initial version on "04/07/19 17:42:35"
+ *
+ ********************************************************************************/
+
+#ifndef _TSL2561_H_
+#define _TSL2561_H_
+
+#define TSL2561_I2C_ADDR 0x39
+
+#define CONTROL_REG 0x80
+#define REG_COUNT 4
+
+#define POWER_UP 0x03
+#define POWER_DOWN 0x00
+
+/* Register Address */
+enum
+{
+ /* Channel_0 = DATA0HIGH<<8 + DATA0LOW */
+ DATA0LOW = 0x8C,
+ DATA0HIGH,
+
+ /* Channel_1 = DATA1HIGH<<8 + DATA1LOW */
+ DATA1LOW,
+ DATA1HIGH,
+};
+
+#endif /* ----- #ifndef _TSL2561_H_ ----- */
+
--
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